A sample of field soil is tested in the laboratory. The results of Standard Proctor test at optimum moisture content are given in the Table below: At the field, a sample of 552 cm of this soil weighted 1104 g. The weight of water in this sample was 184 g. Find the degree of compaction (Relative compaction) at Standard Proctor test. Table 1: Standard Proctor test data Mass of wet soil in the mold(g) Volume of proctor mold(cm) Optimum moisture content% 1656 828 12

A sample of field soil is tested in the laboratory. The results of Standard Proctor test at optimum moisture content are given in the Table below: At the field, a sample of 552 cm of this soil weighted 1104 g. The weight of water in this sample was 184 g. Find the degree of compaction (Relative compaction) at Standard Proctor test. Table 1: Standard Proctor test data Mass of wet soil in the mold(g) Volume of proctor mold(cm) Optimum moisture content% 1656 828 12

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Compaction

Section: Chapter Questions

Problem 5.7P

See similar textbooks

Similar questions

An undisturbed soil sample was prepared for a triaxial testing. The cylindrical soil sample is 50 mm in diameter and 100 mm long. It has a mass of 360 g. After finding the mass of the entire sample, a small portion was removed and a moisture content test was performed on it. The result of the moisture content test is shown in Table 3(a). Given the specific gravity, G, is 2.70. (i) Compute the moisture content (%) of the soil sample. (ii) By using the soil phase diagram, determine the bulk density (kg/m³), dry density (kg/m³), void ratio, porosity (%) and degree of saturation (%) of the soil sample.
The resulting of the Standard Proctor Test is as follows: Vol. of Proctor Mold (cu.m) Wt. of wet soil in mold (kg) Moisture (%) 943.3 1.76 12 943.3 1.86 14 943.3 1.92 16 943.3 1.95 18 943.3 1.93 20 943.3 1.90 22 a. Determine the maximum dry unit weight of compaction b. Determine the optimum moisture content
The laboratory compaction test of a certain type of soil gives a maximum dry density of 1486 g/m3 with an optimum moisture content of 12.5%. The following are the results of a field unit weight determination test using sand cone method. Volume of soil excavated from the hole = 0.001337 m3 Weight of soil from the hole when wet = 2220 g Weight of soil from the hole when dried = 1890 g Determine the field unit weight of soil in g/cm3. Determine the relative compaction, then tell whether it is within the allowable range for relative compaction of 95 ± 0.20?
Standard proctor compaction test results on a sandy clay (35% sand, 55% clay, and 10% silt), taken from a borrow pit, are given in the following table. The sandy clay in the borrow pit has a porosity of 65% and a water content of 5.2%. A highway embankment is to be constructed using this soil. (a) Specify the compaction (dry unit weight and water content) to be achieved in the field. Justify your specification. (b) How many cubic meters of borrow pit soil are needed for 1 cubic meter of highway fill? (c) How much water per unit volume is required to meet the specification? (d) How many truckloads of soil will be required for a 100,000 m3 highway embankment? Each truck has a load capacity of 22.5 m3 and regulations required a maximum load capacity of 90%. (e) Determine the cost for 100,000 m3 of compacted soil based on the following: Purchase and load borrow pit material at site, haul 2 km round-trip, and spread with 200 HP dozer = $15/m3; extra mileage charge for each km =…
Determine the maximum dry unit weight of compaction Determine the optimum moisture content Determine the void ratio at the optimum moisture content. Gs = 2.70 Determine the degree of saturation at the optimum moisture content A field unit determination test for the soil, yielded the following data. Moisture content = 12% and moist unit weight = 106 lb/cu.ft. Determine the relative compaction.
Problem 1:The results of a standard Proctor test are given in the following table. Given: Mold volume = 1/30 ft^3 and Gs = 2.69. Determine the void ratio and the degree of saturation at the optimum moisture content. Trial # Weight of moist soil in the mold (lb) Moisture content (%) 1 3.7 8.6 2 4.15 10.6 3 4.69 12.5 4 4.62 14.9 5 4.02 16.7 6 3.63 18.3 Problem 2The laboratory test in Problem 1 is used to develop field compaction specification for a highway project. A field unit weight determination during the construction revealed that the in situ moist unit weight is 124 lb/ft3 and the moisture content is 13.7%. Determine the relative compaction in the field.
From a compaction test the dry density of soil was found to be 1860kg/m3. when the water content was 15%. To determine the shear strength of soil in this condition a cylinder test specimen 100mm in diameter and 200mm long was prepared. Find the mass of oven dried soil and the water required for specimen. what would be the degree of saturation assuming specific gravity= 2.65.
In a constant head permeability test, a soil sample is compacted into a round PVC pipe and placed into a tank as shown. After sufficient time is allowed for saturation of the soil, the test is conducted under standard temperature pressure conditions for 4 hours. A total of 227 g of water is decanted into a measuring vessel during the test. What is the coefficient of permeability of the soil?
Refer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the shrinkage limit of the soil as shown in Figure 4.22. 4.5 The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.
Following results are obtained for a liquid limit test using a fall cone device. Estimate the liquid limit of the soil and the flow index.
The coefficient of permeability for a fine-grained soil is determined in a laboratory by use of a falling-head test. Test conditions and results are as indicated below. Determine the coefficient of permeability, then indicate the probable soil classification. Length of soil sample = 150 mm Cross-sectional area of sample = 1,140 mm2 Cross-sectional area of standpipe = 200 mm2 At the start of the test, the water level in the supply standpipe is 1 m above the top of the permeameter. One hour after start, the water level in the supply standpipe is 0.95 m above the top of the permeameter.
A 1 m thick soil with an initial void ratio of 0.94 was compacted by a roller and its thickness reduced by 0.09 m. The specific gravity of this soil is 2.65. A 178.0 g soil sample was collected from the compacted soil mass to examine the degree of compaction. The sample was dried in an oven for 24 hours and it had a dry mass of 142.4 g. Determine the degree of saturation of the soil after the compaction.